Question

the inner circumference of a circular track is 330 and the track is 10.5 metre wide everywhere calculate the cost of putting a fence along the outer circle at the rate of rs 2 per metre​

Answer 1

Answer:

Step-by-step explanation:

inner radius be

330m = 2πr here use π=22/7

r=52.5 m

0uter radius = r+10.5

=63m

Circumference = 2π R( use π=22/7)

Circumference = 2π 63 m

Circumference =396 m

the rate of Rs 2 per meter for fencing

Cost of 396m fencing = Rs  2×396

Cost of 396m fencing = Rs 792